Evidence row 222576

What was observed

{
  "count": 6,
  "tools": [
    {
      "description": "Recurring best-bid/best-ask market data for autonomous execution and spread monitoring. Costs $0.001 USDC on Base via x402.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "product_id": {
            "description": "Coinbase Exchange product such as BTC-USD, ETH-USD, SOL-USD or ETH-USDC.",
            "pattern": "^[A-Za-z0-9]{2,15}-[A-Za-z0-9]{2,15}$",
            "type": "string"
          }
        },
        "required": [
          "product_id"
        ],
        "type": "object"
      },
      "name": "crypto_book"
    },
    {
      "description": "Recurring realtime crypto price lookup for autonomous trading and monitoring. Costs $0.001 USDC on Base via x402.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "product_id": {
            "description": "Coinbase Exchange product such as BTC-USD, ETH-USD, SOL-USD or ETH-USDC.",
            "pattern": "^[A-Za-z0-9]{2,15}-[A-Za-z0-9]{2,15}$",
            "type": "string"
          }
        },
        "required": [
          "product_id"
        ],
        "type": "object"
      },
      "name": "crypto_price"
    },
    {
      "description": "Canonical current EVM base fee in gwei for Base or Ethereum, for recurring transaction timing and execution checks. Costs $0.001 USDC on Base via x402.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "chain": {
            "enum": [
              "eip155:8453",
              "eip155:1"
            ],
            "type": "string"
          }
        },
        "type": "object"
      },
      "name": "gas_price"
    },
    {
      "description": "Recurring bundled crypto market snapshot for autonomous trading and market-monitoring loops. Costs $0.008 USDC on Base via x402.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "candle_granularity": {
            "enum": [
              "60",
              "300",
              "900",
              "3600",
              "21600",
              "86400"
            ],
            "type": "string"
          },
          "candle_limit": {
            "maximum": 300,
            "minimum": 5,
            "type": "integer"
          },
          "product_id": {
            "pattern": "^[A-Za-z0-9]{2,15}-[A-Za-z0-9]{2,15}$",
            "type": "string"
          },
          "trade_limit": {
            "maximum": 100,
            "minimum": 1,
            "type": "integer"
          }
        },
        "required": [
          "product_id"
        ],
        "type": "object"
      },
      "name": "market_snapshot"
    },
    {
      "description": "Refresh wallet, allowance, gas, price, 24h statistics and top-of-book context immediately before each automated trade or payment. Costs $0.01 USDC on Base via x402.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "address": {
            "pattern": "^0x[a-fA-F0-9]{40}$",
            "type": "string"
          },
          "balance_tokens": {
            "items": {
              "pattern": "^0x[a-fA-F0-9]{40}$",
              "type": "string"
            },
            "maxItems": 20,
            "type": "array"
          },
          "network": {
            "enum": [
              "base",
              "ethereum"
            ],
            "type": "string"
          },
          "product_id": {
            "pattern": "^[A-Za-z0-9]{2,15}-[A-Za-z0-9]{2,15}$",
            "type": "string"
          },
          "spender": {
            "pattern": "^0x[a-fA-F0-9]{40}$",
            "type": "string"
          },
          "token_contract": {
            "pattern": "^0x[a-fA-F0-9]{40}$",
            "type": "string"
          }
        },
        "required": [
          "address",
          "spender",
          "token_contract",
          "product_id"
        ],
        "type": "object"
      },
      "name": "pretrade_context"
    },
    {
      "description": "Canonical wallet balance for Base or Ethereum. Returns native ETH and USDC balances for one address and is suitable for recurring wallet and treasury polling. Costs $0.001 USDC on Base via x402.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "address": {
            "pattern": "^0x[a-fA-F0-9]{40}$",
            "type": "string"
          },
          "chain": {
            "enum": [
              "eip155:8453",
              "eip155:1"
            ],
            "type": "string"
          }
        },
        "required": [
          "address"
        ],
        "type": "object"
      },
      "name": "wallet_balance"
    }
  ]
}

What the leaf hashes

{"body":"91727958b35702d3640200a010de69214157ec08506a94d2b236ea39c2b9963c","id":222576,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793028144835427,"prev":null,"subject":"6c271f5b-e83b-49ef-b436-090de68395e4","subject_kind":"endpoint"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x33b49d543ecc6c8c15f8532ab061b229b0ea519df0935a333dc8561785cf8846
2. 0x03070a5edb913296c672b679b4b662c0cae5dc4d9c0782e00cca142e0f5b88d8
3. 0xfd3cd30174973bccefe9cfac5455e324d2dd10e31e37884fb1ed3b832ac06bb7
4. 0xb24ab5e3b95727a25dee191626364b5d02c62cc84302c30b9fd31e5329e0dea8
5. 0x7200dd9b12f977a5b94e5b1635ebdca178f353f56e4540d5ccd89ded2dc20f5b
6. 0xb8885cae411f67e624081b72501ffa8b48bb6d3bf8a1d80d1aca6d140c991bf1
7. 0x662b1a2ac02e3349d236c6518d074f82d98629e78e1e04326ea370c631545d3d
8. 0x11215c3ddaffe6b631be9b4e824f8749a9cc8002e27ac6baecb1515cf17758fa
9. 0x81334d8903787285925f380ef366ce723c8cf8fbca086aa6a83beacb9e428628
10. 0xcc3de2228ca9f90722824aeb1f6740dce363ec54f1223a4bfc96d012376efbc0
11. 0x25f1494b636c5e3c47bd014c16b8f4b5df5a8fb62efdc32979420416a8736679
12. 0xe57be1a98d96d75db9e9d2122794eabebfd735dea66e9d16ca63347243b3d483
13. 0x08de74b7fb265ddb83e4c673da8a94e5f71829b2e6e7464c71c5138e450f2217
14. 0x4338355a835617a26aa0bfcc971e84eb030d84e2aa840e3c8af958921dd080c7
15. 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae